<template>
    <el-form inline="true">
      <el-form-item label="创建日期">
        <el-date-picker v-model="datetimeRange" style="width: 240px" type="datetimerange" range-separator="至"
          start-placeholder="开始日期" end-placeholder="结束日期"></el-date-picker>
      </el-form-item>
      <el-form-item label="竞赛名称">
        <el-input v-model="params.title" placeholder="请您输入要搜索的竞赛名称" />
      </el-form-item>
      <el-form-item>
        <el-button @click="onSearch" plain>搜索</el-button>
        <el-button @click="onReset" plain type="info">重置</el-button>
        <el-button type="primary" :icon="Plus" plain @click="onAddExam">添加竞赛</el-button>
      </el-form-item>
    </el-form>
    <!-- 表格 -->
    <el-table height="526px" :data="examList">
      <el-table-column prop="title" label="竞赛标题"/>
      <el-table-column prop="startTime" width="180px" label="竞赛开始时间" />
      <el-table-column prop="endTime" width="180px" label="竞赛结束时间" />
      <el-table-column label="是否开赛" width="100px">
        <template #default="{ row }">
          <div v-if="!isNotStartExam(row)">
            <el-tag type="warning">已开赛</el-tag>
          </div>
          <div v-else>
            <el-tag type="info">未开赛</el-tag>
          </div>
        </template>
      </el-table-column>
      <el-table-column prop="status" width="100px" label="是否发布">
        <template #default="{ row }">
          <div v-if="row.status == 0">
            <el-tag type="danger">未发布</el-tag>
          </div>
          <div v-if="row.status == 1">
            <el-tag type="success">已发布</el-tag>
          </div>
        </template>
      </el-table-column>
      <el-table-column prop="createName" width="140px" label="创建用户" />
      <el-table-column prop="createTime" width="180px" label="创建时间" />
      <el-table-column label="操作" width="180px">
        <template #default="{ row }">
          <el-button v-if="isNotStartExam(row) && row.status == 0" type="text" @click="onEdit(row.examId)">编辑
          </el-button>
          <el-button v-if="isNotStartExam(row) && row.status == 0" type="text" @click="onDelete(row.examId)" class="red">删除
          </el-button>
          <el-button v-if="row.status == 1 && isNotStartExam(row)" type="text"
            @click="cancelPublishExam(row.examId)">撤销发布</el-button>
          <el-button v-if="row.status == 0 && isNotStartExam(row)" type="text"
            @click="publishExam(row.examId)">发布</el-button>
          <el-button type="text" v-if="!isNotStartExam(row)">已开赛，不允许操作</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页区域 -->
    <el-pagination background size="small" layout="total, sizes, prev, pager, next, jumper" :total="total"
      v-model:current-page="params.pageNum" v-model:page-size="params.pageSize" :page-sizes="[5, 10, 15, 20]"
      @size-change="handleSizeChange" @current-change="handleCurrentChange" />
  </template>
  
  <script setup>
  import { Plus } from '@element-plus/icons-vue'
  import { getExamListService, delExamService, publishExamService, cancelPublishExamService } from '@/apis/exam'
  import { reactive,ref } from 'vue'
  import router from '@/router'
  
  function isNotStartExam(exam) {
    const now = new Date(); //当前时间
    return new Date(exam.startTime) > now
  }
  
  const params = reactive({
    pageNum: 1,
    pageSize: 10,
    startTime:'',
    endTime:'',
    title: ''
  })
  
  const examList = ref([])
  const total = ref(0)
  const datetimeRange = ref([])
  
  async function getExamList() {
    if (datetimeRange.value[0] instanceof Date) {
      params.startTime = formatDateTime(datetimeRange.value[0])
    }
    if (datetimeRange.value[1] instanceof Date) {
      params.endTime = formatDateTime(datetimeRange.value[1])
    }
    const result = await getExamListService(params)
    examList.value = result.rows
    total.value = result.total
  }
  
  function formatDateTime(date) {
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    const hours = String(date.getHours()).padStart(2, '0');
    const minutes = String(date.getMinutes()).padStart(2, '0');
    const seconds = String(date.getSeconds()).padStart(2, '0');
    return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
  }
  
  getExamList()
  
  function handleSizeChange(newSize) {
    params.pageNum = 1
    getExamList()
  }
  
  function handleCurrentChange(newPage) {
    getExamList()
  }
  
  function onSearch() {
    params.pageNum = 1
    getExamList()
  }
  
  function onReset() {
    params.pageNum = 1
    params.pageSize = 10
    params.title = ''
    params.startTime = ''
    params.endTime = ''
    datetimeRange.value.length = 0
    getExamList()
  }
  
  function onAddExam() {
    //跳转到新的页面上   
    router.push("/oj/layout/updateExam?type=add")
  }
  
  async function onEdit(examId) {
    // await getExamDetailService(examId)
    router.push(`/oj/layout/updateExam?type=edit&examId=${examId}`)
    ///oj/layout/updateExam?type=edit&examId=${examId}
    ///oj/layout/updateExam?type=edit&examId=123
  }
  
  async function onDelete(examId) {
    ElMessageBox.confirm('确定要删除这个问题吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
    }).then(async () => {
        await delExamService(examId)
        params.pageNum = 1
        getExamList()
        ElMessage.success('竞赛删除成功')
    }).catch(() => {
        // 用户点击取消时的操作，这里可以留空或者添加其他逻辑
    });
    
  }
  
  async function publishExam(examId) {
        await publishExamService(examId)
        getExamList()
        ElMessage.success('竞赛发布成功')
  }
  
  async function cancelPublishExam(examId) {
    ElMessageBox.confirm('确定要撤销发布这个竞赛吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
    }).then(async () => {
        await cancelPublishExamService(examId)
        getExamList()
        ElMessage.success('竞赛撤销发布成功')
    }).catch(() => {
        // 用户点击取消时的操作，这里可以留空或者添加其他逻辑
    });
  }
  
  </script>